# A013373 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -40
4 0
5 -480
6 246400
7 -8320
8 51251200
9 -12197916160
10 11394406400
11 -15296025241600
12 2348235343872000
13 -17026923803402240
14 10977173716094976000
15 -1257676453660275015680